Template:Infobox element/symbol-to-saw/overview-compare-wikidata/doc
Element (E) |
Ar°(E) |
Value type |
Ar°(E), abridged or conventional |
Mass number [most stable isotope] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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hydrogen | 1H | [1.00784, 1.00811] | interval | 1.0080±0.0002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
nitrogen | 7N | [14.00643, 14.00728] | interval | 14.007±0.001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
fluorine | 9F | 18.998403162±0.000000005 | number ± uncertainty | 18.998±0.001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
calcium | 20Ca | 40.078±0.004 | number ± uncertainty | 40.078±0.004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
technetium | 43Tc | (none) | most stable isotope | [97] |
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Sources (CIAAW publications)
edit (This list: )
CIAAW may publish changes to atomic weights (including its precision and derived values). Since 1947, any update this is done in odd years nominally; the actual date of publication may be some time later.
- 2009
{{CIAAW2009}}
(introducing interval notation; Ge):
- "Atomic weights of the elements 2009 (IUPAC Technical Report)". Pure Appl. Chem. 83 (2): 359–396. 12 December 2010. doi:10.1351/PAC-REP-10-09-14.
- 2011
{{CIAAW2011}}
(interval for Br, Mg):
- "Atomic weights of the elements 2011 (IUPAC Technical Report)". Pure Appl. Chem. 85 (5): 1047–1078. 29 April 2013. doi:10.1351/PAC-REP-13-03-02.
- 2013
{{CIAAW2013}}
(all elements listed):
- Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- 2015
{{CIAAW2015}}
(ytterbium changed):
- "Standard Atomic Weight of Ytterbium Revised". Chemistry International. 37 (5–6): 26. October 2015. doi:10.1515/ci-2015-0512. eISSN 0193-6484. ISSN 0193-6484.
- 2017
{{CIAAW2017}}
(14 values changed):
- "Standard atomic weights of 14 chemical elements revised". CIAAW. 2018-06-05.
- 2019 (hafnium value changed): Meija, Juris; et al. (2019-12-09). "Standard atomic weight of hafnium revised". CIAAW. Retrieved 2020-02-25.
- 2020* (lead value changed): Zhu, Xiang-Kun; Benefield, Jacqueline; Coplen, Tyler B.; Gao, Zhaofu; Holden, Norman E. (1 October 2020). "Variation of lead isotopic composition and atomic weight in terrestrial materials (IUPAC Technical Report)". doi:10.1515/pac-2018-0916.
- * "2020" is an inconsistent year for change publication: CIAAW maintains that only odd years, changes are publicised.
- 2021
{{CIAAW2021}}
(all elements listed); (4 values changed; introduced new symbol; merge "conventional" into "abridged" columns; change uncertainty notation (use "±")
- Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
- Uncertainty handling
About notation and handling of the uncertainty in the values, including those in [ ] range values:
- Possolo, Antonio; van der Veen, Adriaan M.H.; Meija, Juris; et al. (4 Jan 2018). "Interpreting and propagating the uncertainty of the standard atomic weights (IUPAC Technical Report)". doi:10.1515/pac-2016-0402. Retrieved 20 Oct 2020.
- {{CIAAW2021}}: changing notation (i.e., interpretation, not the value) from 123.45(2) into 123.45±0.02
Outdated references
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- See also: {{Isotopes table/references}}
See also
edit
- ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.